My house doesn't have a basement either. I put the cat litterbox in the livingroom under a computerdesk,then use a borad to 擋住大部分 隻留 enough 的寬度讓貓出入。I use 不帶眼兒的鏟子 to remove all the wet and it's 附近的 drysand。 I clean the box twice daily. There is no bad smell at all. My cat is very smart, she covers very well and after she even pats her paws against the wall to get rid of the sand inside her paws. I put her food tray in our dinner room.